Asthma in Children

Original source overview

What is asthma? Asthma is a chronic (long-term) lung disease. It affects your airways, the tubes that carry air in and out of your lungs. When you have asthma, your airways can become inflamed and narrowed. This can cause wheezing, coughing, and tightness in your chest. When these symptoms get worse than usual, it is called an asthma attack or flare-up.

How does asthma affect children? Asthma often starts during childhood, usually before age 5. Many children have asthma - it is the most common chronic disease of childhood. It can cause children to miss school and end up in the hospital. But treatments can help manage asthma.

What causes asthma in children?The exact cause of asthma is unknown. Genetics and environment likely play a role in which children get asthma.

An asthma attack can happen when your child is exposed to an asthma trigger. An asthma trigger is something that can set off or worsen asthma symptoms. Different triggers can cause different types of asthma:

• Allergic asthma is caused by allergens. Allergens are substances that cause an allergic reaction. They can include

• Dust mites • Mold • Pets • Pollen from grass, trees, and weeds • Waste from pests such as cockroaches and mice

• Nonallergic asthma is caused by triggers that are not allergens, such as

• Breathing in cold air • Certain medicines • Household chemicals • Infections such as colds and the flu • Outdoor air pollution • Tobacco smoke

• Exercise-induced asthma happens during physical exercise, especially when the air is dry

Asthma triggers may be different for each child and can change over time.

Which children are at risk for asthma?Certain factors raise the risk of asthma in children:

• Being exposed to secondhand smoke when their mother is pregnant with them or when they are small children • Genetics and family history. Children are more likely to have asthma if one of their parents has it, especially if it's the mother. • Race or ethnicity. Black and African Americans and Puerto Ricans are at higher risk of asthma than people of other races or ethnicities. • Having other diseases or conditions such as obesity and allergies • Often having viral respiratory infections as young children • Sex. In children, asthma is more common in boys. In teens, it is more common in girls.

What are the symptoms of asthma in children?The symptoms of asthma in children include:

• Chest tightness • Coughing, especially at night or early morning • Breathing problems, such as shortness of breath, rapid breathing, or gasping for air • Feeling tired • Dark circles under the eyes • Being irritable • Wheezing, which causes a whistling sound when they breathe out • Trouble eating or sucking (in infants)

These symptoms can range from mild to severe. They may happen often or only once in a while.

When children have an asthma attack, their symptoms get much worse. The attacks may come on gradually or suddenly. Sometimes they can be life-threatening. Warning signs of a severe attack include severe coughing, serious breathing problems, and turning very pale or blue in the face, lips and/or fingernails. If your child has those symptoms, get medical help right away.

How is asthma in children diagnosed?It can be hard to diagnose asthma in children, especially if they are young. Asthma has similar symptoms as other childhood conditions. And some children may not have asthma symptoms very often, so it may seem like they are having respiratory infections instead.

Your child's health care provider may use many tools to diagnose asthma:

• Physical exam • Medical history • Chest x-ray • Lung function tests, including spirometry, to test how well the lungs work. Younger children are usually not able to do these tests. • Allergy skin or blood tests, if you have a history of allergies. These tests check which allergens cause a reaction from your immune system.

If you have a young child who cannot do lung function tests, the provider may suggest doing a trial of asthma medicines. The trial involves giving your child the medicines for several weeks to see whether the symptoms get better.

What are the treatments for asthma in children?If your child has asthma, you will work with their health care provider to create a treatment plan. The plan will include ways to manage your child's asthma symptoms and prevent asthma attacks, such as:

• Strategies to avoid triggers. For example, if tobacco smoke is a trigger for your child, you should not allow anyone to smoke in your home or car. • Short-term relief medicines, also called quick-relief medicines. They help prevent symptoms or relieve symptoms during an asthma attack. They include an inhaler to have for your child at all times. It may also include other types of medicines which work quickly to help open your child's airways. • Control medicines. They work by reducing airway inflammation and preventing narrowing of the airways. Not all children will take control medicines. Whether or not your child needs them depends on how severe the asthma is and how often your child has symptoms.

If your child has a severe attack and the short-term relief medicines do not work, get medical help right away.

Your child's provider may adjust the treatment until the asthma symptoms are controlled.

Encyclopedic background — Wikipedia

The following selected excerpts provide background on “Asthma”. This related background source does not cover every aspect of the specific topic “Asthma in Children”; population-specific details and decisions should be checked in the original topic source. They are not a substitute for the source overview or current local clinical guidance. Each excerpt below comes from the fixed Wikipedia revision [W1].

Definition and overview [W1]

Asthma is a common long-term inflammatory disease of the airways. It is characterized by variable and recurring symptoms and reduced lung function. Symptoms include episodes of wheezing, coughing, chest tightness, and shortness of breath. A sudden worsening of asthma symptoms sometimes called an asthma attack or an asthma exacerbation can occur when allergens, pollen, dust, or other particles are inhaled into the lungs, causing the bronchioles to constrict and produce mucus, which then restricts oxygen flow to the alveoli. These may occur a few times a day or a few times per week. Depending on the person, asthma symptoms may become worse at night or with exercise.

Asthma is thought to be caused by a combination of genetic and environmental factors. Environmental factors include exposure to air pollution and allergens. Other potential triggers include medications such as aspirin and beta blockers. Diagnosis is usually based on the pattern of symptoms, response to therapy over time, and spirometry lung function testing. Asthma is classified according to the amount of medication required to control symptoms or mechanisms underlying the condition.

There is no known cure for asthma, but it can be controlled. Symptoms can be prevented by avoiding triggers, such as allergens and respiratory irritants, and suppressed with the use of inhaled corticosteroids. Long-acting beta agonists (LABA) or antileukotriene agents may be used in addition to inhaled corticosteroids if asthma symptoms remain uncontrolled. Treatment of rapidly worsening symptoms is usually with an inhaled short-acting beta2 agonist such as salbutamol, corticosteroids taken by mouth, and oxygen therapy. In very severe cases, intravenous corticosteroids and hospitalization may be required.

Signs and symptoms [W1]

Asthma causes recurrent episodes of wheezing, shortness of breath, chest tightness, and coughing. Symptoms are usually worse at night and in the early morning or in response to exercise or cold air. Some people with asthma rarely experience symptoms, usually in response to triggers, whereas others may react frequently and experience persistent symptoms.

Classification [W1]

Due to the diversity in onset, symptoms, outcomes, and response to treatment, asthma is often considered a syndrome—a collection of signs and symptoms—rather than a single condition. Historically asthma was classified as being caused by external factors (extrinsic) such as allergens or by internal factors (intrinsic), unrelated to allergies. Asthma is most commonly classified according to severity, control of symptoms, phenotypes and endotypes.

Asthma and chronic obstructive pulmonary disease (COPD) cause airway restriction and have a wide range of overlapping mechanisms and symptoms. The main difference between the two disorders is that in asthma expiratory airflow fluctuates over time while in COPD airflow obstruction is chronic and often increases in severity over time.

Causes [W1]

Asthma is caused by a mixture of genetic and external factors. The disease manifests when those with a genetic susceptibility to asthma are exposed to specific environmental factors. Environmental factors can also trigger asthma symptoms.

Reading this topic in context

Use “Asthma in Children” as a starting point for a focused discussion, rather than treating every statement in the broader encyclopedia article as applying to you. The original source overview and the background excerpts answer different questions: the overview explains the health topic for readers, while the encyclopedia supplies terminology and general context. Keep a record of which questions concern symptoms, a confirmed diagnosis, prevention, or an existing treatment. This helps a healthcare professional address the relevant issue without relying on an internet label.

Questions to take to a professional

1. How will the child's diagnosis, inhaler technique and symptom control be reviewed?

2. What plan should caregivers and the school have for worsening symptoms?

Evidence, scope and next steps

The health-topic overview is attributed to MedlinePlus / the National Library of Medicine at the original topic link below. Wikipedia [W1] is a secondary background source; its references can support further reading, but their presence is not evidence that WellPrimer has independently reviewed every study. No clinical review, guideline certification or NLM endorsement is claimed. For screening intervals, diagnostic thresholds, pregnancy or child-specific advice and treatment choices, check current guidance in your country with a qualified professional. Do not start, stop or change a prescribed medicine based on encyclopedia excerpts. New or worsening symptoms need appropriate clinical assessment rather than more reading alone.

Attribution and reuse

[W1] Wikipedia contributors, “Asthma”. Version 1378594635, edited 2026-10-05. Retrieved 2026-10-16. Fixed revision: https://en.wikipedia.org/w/index.php?title=Asthma&oldid=1378594635. Contributor history: https://en.wikipedia.org/w/index.php?title=Asthma&action=history. License: https://creativecommons.org/licenses/by-sa/4.0/ .

The MedlinePlus health-topic summary retains its original attribution. Wikipedia excerpts and the added compilation/commentary are shared under CC BY-SA 4.0; selections, section ordering and editorial reading prompts have been added. No images are reused. This is an educational compilation, not a clinician-reviewed guideline.